Updated: March 20, 2026
| Feature | NOW Foods NAC 1000mg | Gaia Herbs Milk Thistle Seed |
|---|---|---|
| Price | $24.95 | $19.95 |
| Rating | 4.4/5.0 | 4.4/5.0 |
| Reviews | 2345 reviews | 1876 reviews |
| Brand | NOW Foods | Gaia Herbs |

N-Acetyl Cysteine. Precursor to glutathione. Supports liver detoxification and respiratory health. Powerful antioxidant.

Certified organic milk thistle seed extract. Supports liver health and detoxification. Contains 80% silymarin.
Both NOW Foods NAC 1000mg and Gaia Herbs Milk Thistle Seed are highly effective heavy metal detox products. Both products have the same rating (4.4/5.0), indicating similar effectiveness.
Gaia Herbs Milk Thistle Seed is more affordable at $19.95 compared to NOW Foods NAC 1000mg at $24.95, making it better value for budget-conscious buyers.
NOW Foods NAC 1000mg has more customer reviews (2345 vs 1876), indicating it's more popular and has been tested by more users.
Choose NOW Foods NAC 1000mg if:
Choose Gaia Herbs Milk Thistle Seed if:
Both NOW Foods NAC 1000mg and Gaia Herbs Milk Thistle Seed are excellent heavy metal detox options. Your choice should depend on your specific needs, budget, and brand preferences.
For more heavy metal detox options, check out our complete Heavy Metal Detox guide.